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Home >> Mazda >> 2023 >> 3 Select, 4D Hatchback >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic - Body Control Module (BCM) (2 Of 4) >> DTC B1512-87: Communication Error With Indicator Unit [Body Control Module (BCM)] >> Outline
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DTC B1512-87: Communication Error With Indicator Unit [Body Control Module (BCM)]: Outline

DTC B1512:87 - BODY CONTROL MODULE (BCM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Communication error with indicator unit
Detection condition  
  • The body control module (BCM) cannot receive the signals from the indicator unit.
Fail-safe Not applicable
Possible cause  
  • Indicator unit connector or terminal malfunction
  • Body control module (BCM) connector or terminal malfunction
  • Short to ground in indicator unit LIN communication line
  • Open circuit in indicator unit LIN communication line
  • Indicator unit malfunction
  • Body control module (BCM) malfunction
G15740266Courtesy of MAZDA MOTORS CORP.